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1   /*
2    * Copyright (C) 2012, Google Inc.
3    * and other copyright owners as documented in the project's IP log.
4    * * This program and the accompanying materials are made available
5    * under the terms of the Eclipse Distribution License v1.0 which
6    * accompanies this distribution, is reproduced below, and is
7    * available at http://www.eclipse.org/org/documents/edl-v10.php
8    *
9    * All rights reserved.
10   *
11   * Redistribution and use in source and binary forms, with or
12   * without modification, are permitted provided that the following
13   * conditions are met:
14   *
15   * - Redistributions of source code must retain the above copyright
16   *   notice, this list of conditions and the following disclaimer.
17   *
18   * - Redistributions in binary form must reproduce the above
19   *   copyright notice, this list of conditions and the following
20   *   disclaimer in the documentation and/or other materials provided
21   *   with the distribution.
22   *
23   * - Neither the name of the Eclipse Foundation, Inc. nor the
24   *   names of its contributors may be used to endorse or promote
25   *   products derived from this software without specific prior
26   *   written permission.
27   *
28   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
29   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
30   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
31   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
33   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
35   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
36   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
37   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
38   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
40   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41   */
42  
43  package org.eclipse.jgit.transport;
44  
45  import java.util.Map;
46  import java.util.Set;
47  
48  import org.eclipse.jgit.lib.ObjectId;
49  import org.eclipse.jgit.lib.Ref;
50  import org.eclipse.jgit.lib.Repository;
51  import org.eclipse.jgit.revwalk.RevWalk;
52  
53  /**
54   * Implementation of {@link org.eclipse.jgit.transport.AdvertiseRefsHook} that advertises the same refs for
55   * upload-pack and receive-pack.
56   *
57   * @since 2.0
58   */
59  public abstract class AbstractAdvertiseRefsHook implements AdvertiseRefsHook {
60  	/** {@inheritDoc} */
61  	@Override
62  	public void advertiseRefs(UploadPack uploadPack)
63  			throws ServiceMayNotContinueException {
64  		uploadPack.setAdvertisedRefs(getAdvertisedRefs(
65  				uploadPack.getRepository(), uploadPack.getRevWalk()));
66  	}
67  
68  	/** {@inheritDoc} */
69  	@Override
70  	public void advertiseRefs(BaseReceivePack receivePack)
71  			throws ServiceMayNotContinueException {
72  		Map<String, Ref> refs = getAdvertisedRefs(receivePack.getRepository(),
73  				receivePack.getRevWalk());
74  		Set<ObjectId> haves = getAdvertisedHaves(receivePack.getRepository(),
75  				receivePack.getRevWalk());
76  		receivePack.setAdvertisedRefs(refs, haves);
77  	}
78  
79  	/**
80  	 * Get the refs to advertise.
81  	 *
82  	 * @param repository
83  	 *            repository instance.
84  	 * @param revWalk
85  	 *            open rev walk on the repository.
86  	 * @return set of refs to advertise.
87  	 * @throws org.eclipse.jgit.transport.ServiceMayNotContinueException
88  	 *             abort; the message will be sent to the user.
89  	 */
90  	protected abstract Map<String, Ref> getAdvertisedRefs(
91  			Repository repository, RevWalk revWalk)
92  			throws ServiceMayNotContinueException;
93  
94  	/**
95  	 * Get the additional haves to advertise.
96  	 *
97  	 * @param repository
98  	 *            repository instance.
99  	 * @param revWalk
100 	 *            open rev walk on the repository.
101 	 * @return set of additional haves; see
102 	 *         {@link org.eclipse.jgit.transport.ReceivePack#getAdvertisedObjects()}.
103 	 * @throws org.eclipse.jgit.transport.ServiceMayNotContinueException
104 	 *             abort; the message will be sent to the user.
105 	 */
106 	protected Set<ObjectId> getAdvertisedHaves(
107 			Repository repository, RevWalk revWalk)
108 			throws ServiceMayNotContinueException {
109 		return null;
110 	}
111 }